Conducting-cord for telephones



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ONDUTING RD FR TELBPHNES.

No. 301,499. Patented July 8, 1884.

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GONDUGTING GOED EOE TELEPHONES.

PatentedJuly 8, 1884.

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UNITED STATES MILO G. KELLOGG,

PATENT OFFICE.

OF HYDE PARK, ASSIGNOR TO THE WESTERN ELECTRIC COMPANY, OF CHICAGO,ILLINOIS.

CONDUCTlNG-CORD FOR TELEPHONES..

SPECIFICATION forming part of Letters Patent No. 301,499, datedk July 8,1884.

Application tiled July 10, 1882. (No model.)

To @ZZ whom t 'may concerns:

Be it known that I, Mino G. KELLOGG, a citizen of the United States,doing business at Ohicago,lllinois, and residing at Hyde Park, in

the county of Cook and State of Illinois, have invented a certain newand useful Improvenient in Conducting-Cords for Telephones, of which thefollowing is a full, clear, concise, and exact description, referencebeinghad to the accompanying drawings, forming a part of thisspecification. l

My invention relates to the jacket or serving which is braided about theinsulated conductors of telephone-cords. ventiou it was usual to braid acontinuous covering or serving over the two strands of the cord,`and inorder to bring out the ends of the conductors so as to connect with thedifferent ends of the coil of the electro-magnet serving and then tie athread about the cord at thepoint ofseparation of the projecting strandsor tips, inl order to keep the serving from fraying out. Another methodof covering the strands is shown in Letters Patent No. 206,821, grantedEugenel. Phillips, August 6, 1878, for telephoneconductors.

)Iy improvement consists in braiding the serving upon the cord to thepoint Where the strands or tips diverge, and then taking out the saidstrands and' continuing the serving in the form of a cord Withoutincluding either of the said insulated conducting-strands. AfterIcontinuing the serving for a short distance in this manner, theinsulated strands are again included Within the serving. ing the jacketover the conductors I leave at intervals portions of the insulatedconductors which are not covered by the serving, the serving, however,being continued in an independent cord, so that the serving Will befinishedat the point Where the strands are taken out, and also at thepoint Where they are again included Within the jacket or serving. Bycutting the strands and cord inid- 'Way between the points'where thestrands are left uncovered by the serving, I have two projecting tipsvwhich may be connected to the different sides of the coil of thetelephone or 5o to the bindingposts ofthe telephone-line. The

Irior to my inof the telephone it was necessary to slit thev Thus inbraidcontinued portion or end of the serving may be disposed of in anysuitable manner. It may be tucked or threaded under the jacket or tiedabout the jacket; or it may be provided with an eyelet and attached tothe telephone or table, so as to take the strain oft' from the tips. Inthe latter case it should be cut off a little, so as to be somewhatshorter than the projecting strands or tips of the conductingcord. Mymethod is illustrated in the acconi- 6o panying drawings, in WhichlFigure 1 shows two sections of the conductors, connected together by theserving n, con-- tinued in the forni of a cord, Without including eitherof the conductors o p. The conduct 6 5 ors are preferably cut asindicated by dotted line as w, as they pass through thebraiding-machine. Fig.2showstheinsulatedconductorsa and D, which arebound together, as shown, by the serving c. This serving iscontinuedfrorn the point d, as shown, forming the cord c, which does notinclude either of the branching ends or strands f g of the insulatedconductors.

It will be seen that the serving is finished at the point d, so that noserving is necessary to keep the same from fraying out. I have shown theWire ofthe strand f uncovered. The strand g is shown provided with theusual metallic tip. The continuation e of the serving Ihave providedwith an eyelet, which may be at- 8o tached to the telephone or to thetable, as the case may be.

I claim- The method of covering telephone cords, which consists inbraiding the serving upon S5 the conductors to the point Where thestrands or tips are to diverge, and then taking out the said strands andcontinuing the serving in the forni of a cord, Without including thereineither of the conductors, and after a short distance again including theconductors Within the serving, substantially as and for the purposespecified.

In witness whereof I hereunto subscribe my name this 7th day of July, A.D. v1882.

MILO G. KELLOGG.`

Vit-nesses: 4

l F. S. Brunn,

GEORGE I. Baaren.

